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The first step in treating water from a river or lake is usually
7
filtration.
acid rain
acidity.
desalination.
Chlorine kills disease-causing microorganisms.
concentration.
less rainfall than normal.
The amount of one substance in a certain volume of water is called its
7
filtration.
acid rain
acidity.
desalination.
Chlorine kills disease-causing microorganisms.
concentration.
less rainfall than normal.
The pH of water is a measure of its
7
filtration.
acid rain
acidity.
desalination.
Chlorine kills disease-causing microorganisms.
concentration.
less rainfall than normal.
Why is chlorine added to drinking water?
7
filtration.
acid rain
acidity.
desalination.
Chlorine kills disease-causing microorganisms.
concentration.
less rainfall than normal.
Smoke and exhaust from cars and factories create the form of water pollution called
7
filtration.
acid rain
acidity.
desalination.
Chlorine kills disease-causing microorganisms.
concentration.
less rainfall than normal.
The process of obtaining fresh water from salt water is called
7
filtration.
acid rain
acidity.
desalination.
Chlorine kills disease-causing microorganisms.
concentration.
less rainfall than normal.
A drought is a long period of
7
filtration.
acid rain
acidity.
desalination.
Chlorine kills disease-causing microorganisms.
concentration.
less rainfall than normal.
Pure water is neutral, meaning it is neither an acid nor a base. Pure water has a pH of
7
filtration.
acid rain
acidity.
desalination.
Chlorine kills disease-causing microorganisms.
concentration.
less rainfall than normal.
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